Have you ever put garlic under you pillow. Well many people are doing it and it's not to fight off vampires but it has some of the most amazing benefits. There are practical reasons why people put garlic under their pillows and it has shown to have some powerful health benefits. This method has been used for years. Here is why you should put garlic under your pillow down below. 1. Garlic under the pillow has been seen to scare off insects. Use garlic to repel insects from coming near when you sleep especially mosquitoes. 2. Garlic can help you sleep. Garlic contains both vitamin B1 and B6 which can calm your body and help you sleep better at night. 3. Garlic can boost your immune system. Garlic contains a compound called allicin which acts as an antioxidant which helps with inflammation. 4. Garlic can get rid of a stuffy nose. This is also due to the powerful compound known as allicin.